WO2015183199A1 - Procédé de jonction de bss colocalisés - Google Patents

Procédé de jonction de bss colocalisés Download PDF

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Publication number
WO2015183199A1
WO2015183199A1 PCT/SG2015/050128 SG2015050128W WO2015183199A1 WO 2015183199 A1 WO2015183199 A1 WO 2015183199A1 SG 2015050128 W SG2015050128 W SG 2015050128W WO 2015183199 A1 WO2015183199 A1 WO 2015183199A1
Authority
WO
WIPO (PCT)
Prior art keywords
bss
ftm
bsss
information
wireless device
Prior art date
Application number
PCT/SG2015/050128
Other languages
English (en)
Inventor
Gabor Bajko
Chao-chun WANG
Chih-Shi Yee
Original Assignee
Mediatek Singapore Pte. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mediatek Singapore Pte. Ltd. filed Critical Mediatek Singapore Pte. Ltd.
Priority to US15/313,953 priority Critical patent/US10375623B2/en
Priority to EP15799296.7A priority patent/EP3138332B1/fr
Publication of WO2015183199A1 publication Critical patent/WO2015183199A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Definitions

  • the disclosed embodiments relate generally to local wireless area network (WLAN) communications, and, more particularly, to direct finding and positioning in wireless local area networks (WLANs) .
  • WLAN wireless local area network
  • IEEE 802.11 is a set of media access control (MAC) and physical layer (PHY) specification for implementing wireless local area network (WLAN) communication, in the unlicensed (2.4, 5, and 60 GHz) frequency bands.
  • MAC media access control
  • PHY physical layer
  • IEEE 802.11 plays an important role in the growing
  • the key applicable technology is that of ranging using time-of-flight (TOF) ranging measurements defined in IEEE 802. llv. Once the distance between devices is measured, the information can be used to determine device location.
  • TOF time-of-flight
  • FTM Fine Timing Measurement
  • TOF time-of- flight
  • RTD Round Trip Delay
  • timing measurements i.e., timestamps corresponding to the departure time and arrival time of the FTM frames
  • the station To calculate a station position, the station performs ranging measurements with multiple access points (APs) via FTM frame exchange and obtains AP' s positions. FTM positioning requires the initiating station to exchange FTM frames with multiple responding APs for TOF
  • APs access points
  • the station needs to exchange FTM frames with four or more APs in order to determine its absolute location.
  • BSSs Basic Service Sets
  • SSIDs station Identifiers
  • STAs would identify co-located BSSs and avoid doing FTM with co-located BSSs.
  • the STA should consider whether co-located BSSs of different capability can provide different level of location information, such as security, accuracy, etc, and whether there are more than one set of location information with respect to the same AP with different accuracy through different BSSs.
  • One of the conventional method is using multiple BSSID (mBSSID) to signal in beacons which BSSIDs are co- located.
  • mBSSID multiple BSSID
  • the MAC addresses for the co-located BSSs have to be contiguous, otherwise the feature cannot be used.
  • co-located BSSs may be administered by
  • a STA is associated with one of the BSSs which does not advertise FTM support, it may need to go off the channel to do FTM with the BSS that indicates the support for it.
  • this method does not allow the BSSs to provide FTM with different resolutions, add-on features, etc. Moreover, if the BSSs belong to different operators, it would be hard to agree which one to advertise FTM support.
  • a first wireless device obtains basic service set (BSS) information of a plurality of BSSs.
  • BSS basic service set
  • the wireless device then sends a fine time measurement (FTM) frame containing the BSS information to a second wireless device .
  • FTM fine time measurement
  • the BSS information is co-located BSS information.
  • the FTM frame is an unicast frame .
  • the second wireless device wirelessly joins to one of the plurality of BSS according to the BSS information.
  • Figure 1 illustrates the geometry of AP positions.
  • Figure 2 illustrates a frame in accordance with one novel aspect.
  • the co-located BSSs can advertise freely and independently about the FTM support that each BSS has. Therefore, a first wireless device such as the access points (APs) in each of the BSS, can receive the co-located BSS information. The AP can then send FTM frames that includes mBBSID or MAC addresses of the co-located BSSs, such as the frame shown in Fig. 2.
  • the FTM frame 200 includes the BSSID 201 of co- located BSS#1 until the BSSID 202 of co-located BSS#n.
  • the present embodiment does not overload the beacon, and the FTM frame can indicate a list of BSSIDs as it is unicast. Therefore, when a second wireless device, such as a station (STA) , receives the FTM frame that
  • the STA can select one of the BSSs to join and to perform FTM function.
  • the FTM frame can contain
  • This embodiment does not require coordination between the co- located BSSs. It only needs the MAC addresses information of co-located BSSs. And the BSSs can learn this
  • an indication can be added to the beacon to show that this BSS is co-located with other BSSs.
  • the beacon provides the capability for a STA to obtain the list of co-located BSSs' MAC addresses when the STA
  • ANQP Access Network Query Protocol
  • this embodiment does not require coordination between the co-located BSSs. It only needs the MAC addresses information of co-located BSSs. And this information can be learned or shared from each other.
  • an indication can be added to the beacon to show that this BSS is co-located with other BSSs.
  • the beacon provides the capability for a STA to obtain the list of co-located BSSs' MAC addresses when the STA
  • the STA can send a FTM Request Frame including one bit that is used to request the list of BBSIDs of the co-located BSSs. So an AP provides a FTM Frame to contain the list of co-located BSSIDs when requested in the FTM Request Frame.

Abstract

L'invention concerne un procédé pour un environnement à multiples BSSID dans un réseau local sans fil (WLAN). Un premier dispositif sans fil obtient des informations d'ensemble de services de base (BSS) d'une pluralité de BSS. Le premier dispositif sans fil envoie ensuite une trame de mesure fine de temps (FTM) contenant les informations de BSS à un deuxième dispositif sans fil. Le deuxième dispositif sans fil se joint à au moins un des BSS selon les informations de BSS.
PCT/SG2015/050128 2014-05-27 2015-05-27 Procédé de jonction de bss colocalisés WO2015183199A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US15/313,953 US10375623B2 (en) 2014-05-27 2015-05-27 Method of joining co-located BSS
EP15799296.7A EP3138332B1 (fr) 2014-05-27 2015-05-27 Procédé de jonction de bss colocalisés

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201462003238P 2014-05-27 2014-05-27
US62/003,238 2014-05-27

Publications (1)

Publication Number Publication Date
WO2015183199A1 true WO2015183199A1 (fr) 2015-12-03

Family

ID=54699390

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SG2015/050128 WO2015183199A1 (fr) 2014-05-27 2015-05-27 Procédé de jonction de bss colocalisés

Country Status (3)

Country Link
US (1) US10375623B2 (fr)
EP (1) EP3138332B1 (fr)
WO (1) WO2015183199A1 (fr)

Cited By (2)

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US11337028B2 (en) 2016-06-22 2022-05-17 Qualcomm Incorporated Combined fine timing measurement (FTM) and non-FTM messaging for position determination
CN114585071A (zh) * 2015-12-09 2022-06-03 韦勒斯标准与技术协会公司 使用多基本服务标识符集的无线通信方法和无线通信终端

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US20190174577A1 (en) * 2017-12-01 2019-06-06 Qualcomm Incorporated Advertising co-located basic service sets in a network
US10880934B2 (en) * 2017-12-15 2020-12-29 Intel IP Corporation Intra basic service set signaling for multiple access points
CN108802674B (zh) * 2018-07-19 2022-05-10 中国人民解放军战略支援部队信息工程大学 一种针对直接定位的联合搜索方法及装置

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US20080144591A1 (en) * 2006-12-18 2008-06-19 Nokia Corporation Apparatus, methods, and computer program products providing FBMS with multiple BSSID support
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US20080144591A1 (en) * 2006-12-18 2008-06-19 Nokia Corporation Apparatus, methods, and computer program products providing FBMS with multiple BSSID support
US20120229334A1 (en) * 2011-03-11 2012-09-13 Texas Instruments Incorporated Fine time assistance for global navigation satellite systems
WO2014027838A1 (fr) * 2012-08-15 2014-02-20 엘지전자 주식회사 Procédé et appareil de balayage dans un lan sans fil
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114585071A (zh) * 2015-12-09 2022-06-03 韦勒斯标准与技术协会公司 使用多基本服务标识符集的无线通信方法和无线通信终端
CN114585071B (zh) * 2015-12-09 2023-10-31 韦勒斯标准与技术协会公司 使用多基本服务标识符集的无线通信方法和无线通信终端
US11337028B2 (en) 2016-06-22 2022-05-17 Qualcomm Incorporated Combined fine timing measurement (FTM) and non-FTM messaging for position determination

Also Published As

Publication number Publication date
US10375623B2 (en) 2019-08-06
EP3138332A1 (fr) 2017-03-08
EP3138332A4 (fr) 2017-12-13
US20170195943A1 (en) 2017-07-06
EP3138332B1 (fr) 2020-09-09

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